Airbag with bar code

1. An inflatable vehicle occupant protection device, comprising: a curtain airbag having an upper edge portion for securing to an interior of a vehicle for deployment between a side structure of the vehicle and a vehicle occupant; and indicia extending along the length of the curtain airbag for indicating twisting of the curtain airbag when the curtain airbag is rolled up and/or folded along its length, the indicia including a bar code printed on the airbag fabric.

2. The inflatable vehicle occupant protection device recited in claim 1 , wherein the indicia is printed on an inboard side of the curtain airbag facing an occupant of the vehicle when deployed.

3. The inflatable vehicle occupant protection device recited in claim 2 , wherein the indicia indicates twisting of the curtain airbag when the curtain airbag is outboard rolled and/or folded along its length.

4. The inflatable vehicle occupant protection device recited in claim 1 , wherein the indicia extends substantially parallel to the upper edge portion of the curtain airbag.

5. The inflatable vehicle occupant protection device recited in claim 1 , wherein the indicia includes information for tracking the curtain airbag.

6. The inflatable vehicle occupant protection device recited in claim 1 , wherein the indicia includes at least one of the length, height, and position of the curtain airbag in the vehicle.

7. The inflatable vehicle occupant protection device, recited in claim 1 , wherein the curtain airbag is rolled and/or folded along an axis, the indicia extending parallel to the axis when the curtain airbag is properly rolled and being helically wound around the axis when the curtain airbag is improperly rolled.

8. A method of installing an inflatable vehicle occupant protection device in a vehicle, comprising: providing a curtain airbag having a length and indicia extending along the length; rolling and/or folding the curtain airbag about an axis; determining an orientation of the indicia on the rolled and/or folded curtain airbag relative to the axis; installing the rolled and/or folded curtain airbag in the vehicle when the indicia extends parallel to the axis; and unrolling and/or unfolding and rerolling and/or refolding the curtain airbag about the axis when the indicia is helically wound around the axis.

9. A method of installing an inflatable vehicle occupant protection device in a vehicle, comprising: providing a curtain airbag having a length and indicia extending along the length; rolling and/or folding the curtain airbag about an axis; determining an orientation of the indicia on the rolled and/or folded curtain airbag relative to the axis; and installing the rolled and/or folded curtain airbag in the vehicle when the indicia extends parallel to the axis, wherein the indicia is provided on an inboard side of the curtain airbag and the curtain airbag is outboard rolled and/or folded about the axis.

10. A method of installing an inflatable vehicle occupant protection device in a vehicle, comprising: providing a curtain airbag having a length and indicia extending along the length; rolling and/or folding the curtain airbag about an axis; determining an orientation of the indicia on the rolled and/or folded curtain airbag relative to the axis; and installing the rolled and/or folded curtain airbag in the vehicle when the indicia extends parallel to the axis, wherein the indicia includes a bar code printed on the airbag.